Python 3.10 compatibility (#1563)

* use shutil.get_terminal_size instead of click.get_terminal_size()

resolves warning:

rq/cli/helpers.py:107: DeprecationWarning: 'click.get_terminal_size()' is deprecated and will be removed in Click 8.1. Use 'shutil.get_terminal_size()' instead.
  termwidth, _ = click.get_terminal_size()

* remove StrictVersion from rq

* asyncio.get_event_loop -> asyncio.new_event_loop()

resolves warning:

tests/test_job.py::TestJob::test_create_job_with_async
  rq/rq/job.py:839: DeprecationWarning: There is no current event loop
    loop = asyncio.get_event_loop()

* Add python 3.10 to matrix

Co-authored-by: rpkak <rpkak@users.noreply.github.com>

8 files changed, 16 insertions, 22 deletions

diff --git a/.github/workflows/dependencies.yml b/.github/workflows/dependencies.yml
index 958fa3e..24b24f6 100644
--- a/.github/workflows/dependencies.yml
+++ b/.github/workflows/dependencies.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.5, 3.6, 3.7, 3.8.3, 3.9]
+        python-version: [3.5, 3.6, 3.7, 3.8.3, 3.9, 3.10]
         redis-version: [3, 4, 5, 6]
         redis-py-version: [3.5.0]
 
@@ -49,7 +49,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: [3.5, 3.6, 3.7, 3.8.3, 3.9]
+        python-version: [3.5, 3.6, 3.7, 3.8.3, 3.9, 3.10]
         redis-version: [3, 4, 5, 6]
 
     steps:
diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index d5b3cdc..b0a574e 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.5, 3.6, 3.7, 3.8.3, 3.9]
+        python-version: [3.5, 3.6, 3.7, 3.8.3, 3.9, 3.10]
         redis-version: [3, 4, 5, 6]
         redis-py-version: [3.5.0]
 
diff --git a/rq/cli/helpers.py b/rq/cli/helpers.py
index e3564dc..03c16c9 100644
--- a/rq/cli/helpers.py
+++ b/rq/cli/helpers.py
@@ -12,6 +12,7 @@ from enum import Enum
 from datetime import datetime, timezone, timedelta
 from json import loads, JSONDecodeError
 from ast import literal_eval
+from shutil import get_terminal_size
 
 import click
 import redis
@@ -104,7 +105,7 @@ def state_symbol(state):
 def show_queues(queues, raw, by_queue, queue_class, worker_class):
 
     num_jobs = 0
-    termwidth, _ = click.get_terminal_size()
+    termwidth = get_terminal_size().columns
     chartwidth = min(20, termwidth - 20)
 
     max_count = 0
diff --git a/rq/job.py b/rq/job.py
index fa895fe..d773250 100644
--- a/rq/job.py
+++ b/rq/job.py
@@ -11,7 +11,6 @@ import zlib
 import asyncio
 from collections.abc import Iterable
 from datetime import datetime, timedelta, timezone
-from distutils.version import StrictVersion
 from enum import Enum
 from functools import partial
 from uuid import uuid4
@@ -661,7 +660,7 @@ class Job:
 
         mapping = self.to_dict(include_meta=include_meta)
 
-        if self.get_redis_server_version() >= StrictVersion("4.0.0"):
+        if self.get_redis_server_version() >= (4, 0, 0):
             connection.hset(key, mapping=mapping)
         else:
             connection.hmset(key, mapping)
@@ -836,7 +835,7 @@ class Job:
             'started_at': utcformat(self.started_at),
             'worker_name': worker_name
         }
-        if self.get_redis_server_version() >= StrictVersion("4.0.0"):
+        if self.get_redis_server_version() >= (4, 0, 0):
             pipeline.hset(self.key, mapping=mapping)
         else:
             pipeline.hmset(self.key, mapping)
@@ -844,7 +843,7 @@ class Job:
     def _execute(self):
         result = self.func(*self.args, **self.kwargs)
         if asyncio.iscoroutine(result):
-            loop = asyncio.get_event_loop()
+            loop = asyncio.new_event_loop()
             coro_result = loop.run_until_complete(result)
             return coro_result
         return result
diff --git a/rq/queue.py b/rq/queue.py
index c6bc512..5378607 100644
--- a/rq/queue.py
+++ b/rq/queue.py
@@ -8,7 +8,6 @@ import warnings
 from collections import namedtuple
 from datetime import datetime, timezone
 
-from distutils.version import StrictVersion
 from redis import WatchError
 
 from .compat import as_text, string_types, total_ordering
@@ -184,7 +183,7 @@ class Queue:
         """
         job_id = job_or_id.id if isinstance(job_or_id, self.job_class) else job_or_id
 
-        if self.get_redis_server_version() >= StrictVersion("6.0.6"):
+        if self.get_redis_server_version() >= (6, 0, 6):
             try:
                 return self.connection.lpos(self.key, job_id)
             except AttributeError:
diff --git a/rq/utils.py b/rq/utils.py
index e1cb412..d556e69 100644
--- a/rq/utils.py
+++ b/rq/utils.py
@@ -16,7 +16,6 @@ import numbers
 import sys
 
 from collections.abc import Iterable
-from distutils.version import StrictVersion
 
 from redis.exceptions import ResponseError
 
@@ -276,14 +275,13 @@ def parse_timeout(timeout):
 
 def get_version(connection):
     """
-    Returns StrictVersion of Redis server version.
+    Returns tuple of Redis server version.
     This function also correctly handles 4 digit redis server versions.
     """
     try:
-        version_string = connection.info("server")["redis_version"]
+        return tuple(int(i) for i in connection.info("server")["redis_version"].split('.')[:3]) 
     except ResponseError:  # fakeredis doesn't implement Redis' INFO command
-        version_string = "5.0.9"
-    return StrictVersion('.'.join(version_string.split('.')[:3]))
+        return (5, 0, 9)
 
 
 def ceildiv(a, b):
diff --git a/rq/worker.py b/rq/worker.py
index 0cede3d..11ea290 100644
--- a/rq/worker.py
+++ b/rq/worker.py
@@ -14,7 +14,6 @@ import traceback
 import warnings
 
 from datetime import timedelta
-from distutils.version import StrictVersion
 from enum import Enum
 from uuid import uuid4
 from random import shuffle
@@ -317,7 +316,7 @@ class Worker:
                 'python_version': self.python_version,
             }
 
-            if self.get_redis_server_version() >= StrictVersion("4.0.0"):
+            if self.get_redis_server_version() >= (4, 0, 0):
                 p.hset(key, mapping=mapping)
             else:
                 p.hmset(key, mapping)
diff --git a/tests/test_utils.py b/tests/test_utils.py
index add2863..a1217ea 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -5,8 +5,6 @@ import re
 import datetime
 import mock
 
-from distutils.version import StrictVersion
-
 from redis import Redis
 
 from tests import RQTestCase, fixtures
@@ -77,19 +75,19 @@ class TestUtils(RQTestCase):
     def test_get_redis_version(self):
         """Ensure get_version works properly"""
         redis = Redis()
-        self.assertTrue(isinstance(get_version(redis), StrictVersion))
+        self.assertTrue(isinstance(get_version(redis), tuple))
 
         # Parses 3 digit version numbers correctly
         class DummyRedis(Redis):
             def info(*args):
                 return {'redis_version': '4.0.8'}
-        self.assertEqual(get_version(DummyRedis()), StrictVersion('4.0.8'))
+        self.assertEqual(get_version(DummyRedis()), (4, 0, 8))
 
         # Parses 3 digit version numbers correctly
         class DummyRedis(Redis):
             def info(*args):
                 return {'redis_version': '3.0.7.9'}
-        self.assertEqual(get_version(DummyRedis()), StrictVersion('3.0.7'))
+        self.assertEqual(get_version(DummyRedis()), (3, 0, 7))
 
     def test_ceildiv_even(self):
         """When a number is evenly divisible by another ceildiv returns the quotient"""